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	<head>
		<meta charset="utf-8">
		<title>CSS技术</title>
		<!-- <style>
			div{
				color: pink;
				font-size: 50px;
			}
		</style> -->
		<link rel="icon" href="img/3.png">
		<link rel="stylesheet" href="css/tyust.css"/>
		<style>
			.tt{
				color: antiquewhite;
				font-size: 30px;
			}
			#first{
				color: aqua;
				font-size: 40px;
			}
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	</head>
	<body>
		<div>
			太原科技大学软件工程专业
		</div>
		<span style="color: #ff7f00;">
			张国杰太帅啦
		</span>
		<h2>
			class选择器
		</h2>
		<p>dfsfsdfsdf</p>
		<p class="tt">werwerwer</p>
		<span class="tt">gfhfghfgh</span>
		<h2>
			id选择器
		</h2>
		<div id="first">宇宙第一帅</div>
		<div id="second">哈哈哈哈</div>
	</body>
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